SUMMARY Objective: To compare trophic effects of soluble substances derived from Schwann cells (SC) of neonatal and Wallerian degenerating segments of rats on facial motoneuron (FMN) cultures.

• 目的 :比较培养的面神经和坐骨神经来源施万细胞 (Schwanncell,SC)的可溶性分泌物对面神经运动神经元 (facialmotoneuron ,FMN)的营养活性作用。